2-Pt. Acoustical Calibrator - Class 1

For calibration of all Sper Scientific digital sound meters and any sound meter with a ½" microphone. The 850012 Sound Level Calibrator is used to calibrate the sensitivity of the microphone and sound level measuring equipment. The design is based on the  feedback method to ensure a highly stable sound pressure level. This compact and ergonomic sound calibrator conforms to ANSI S1.40-1984 and IEC60942 (2003) Class 1 standard, and is perfect for calibrating Type 1 sound level meters with 1/2" microphones. To use, simply place the calibrator onto the digital sound meter’s microphone, turn on the calibrator, and adjust the meter’s reading to either 94 or 114 dB. Operates at a frequency of 1KHz ±1% with an accuracy of ±0.3 dB for 94 dB and ±0.5 dB for 114 dB levels, and features a built-in battery indicator. Small and light, it is easily portable for field use.  Standard sound level settings at 94dB and 114dB Low battery indicator Harmonic wave distortion of ±3%. Output feedback detection Works with the following Sper Scientific class 1 sound meters: Type 1 Sound Meter Comes with a carrying case, instructions and 9V battery. Specifications  Standard  IEC 60942(2003) and ANSI S1.40. (1984)  Sound Pressure Levels  94 and 114 dB (reference of 2x10-5Pa)  Accuracy  94 ± 0.3 dB and 114 ± 0.5dB  Frequency  1000Hz ± 1%.  Distortion  ≤ 3 %  Dimensions  2.5" x  5.25"  Weight 12.35 oz. (including 9V battery)  Stable Times  20s.  Humidity  ＜90%  Atmospheric Pressure  65KPa~100KPa Downloads Instruction Manual